Development of a three-axis micro grinding machine and gantry selection analysis
The demand for ultra-precision micro grinding machines is increasing day by day due to the urgent need for the miniaturization of parts.Machine tool vibration is one of the main problems affecting the machining accuracy and surface roughness of micro grinding.In order to reduce the vibration of machine tool,Ansys Workbench was used to carry out finite element analysis of four types of gantry structures,and an optimal solution was selected as the gantry structure of the micro grinder.Finite element analysis was further carried out on five commonly used gantry materials,and natural granite was finally selected as the gantry and vibration isolation table material.Based on the results of finite element analysis,the complete structure of the micro grinder was designed,and the static,modal and harmonic response analyses of the complete structure were carried out to verify the reasonableness of the overall scheme of the designed micro grinder.According to the results of design and a-nalysis,the experimental prototype of micro grinding machine was developed,and its mo-tion platform can realize three-axis linkage and micron-level motion accuracy,and the speed of the electric spindle can reach up to 80 000 r/min.
micro grindingmicro grinding machinefinite element analysisgantry structure
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